CN212849829U - Over-temperature protection system for food purifier - Google Patents

Abstract

The application discloses an excess temperature protection system for a food purifier, and relates to the food purifier. It provides the excess temperature protection for power supply and purification storehouse, and excess temperature protection system includes: control module, temperature sensor and temperature controller. The control module comprises a controller and a control circuit, the controller generates a control signal according to the received external signal, the control circuit is controlled to be connected or disconnected with the plurality of purifying electrodes, and the on-off device of the control circuit is installed on the radiating fin. The temperature sensor collects the temperature of the power supply and the temperature of the radiating fin and feeds the temperature back to the controller. The temperature controller is arranged on the radiating fin, is connected with a live wire of the power supply and is in a normally-closed state of the mechanical switch. According to different heating conditions, the controller is configured into three-level over-temperature protection by acquiring the temperature. This application is through above-mentioned structure, and the device in the abundant protection food purification machine can not influence life because of overheated, and abundant protection food purification machine does not break down because of the operation of excess temperature.

Description

Over-temperature protection system for food purifier

Technical Field

The application relates to the field of electric products, in particular to an over-temperature protection system for a food purifier.

Background

In the field of electric products at present, all electric products have power consumption and heat generation. Some electrical products have high internal energy consumption and self-heating is serious. And because the temperature of the working environment of the electric product is different due to different regions and seasons, the working temperature of the device of the electric product is very high. When the heat dissipation system of the electric appliance product cannot provide enough heat for dredging the electric appliance product or the heat dissipation system fails, the electric appliance product continuously works at high temperature, the service life of the electric appliance product is influenced by light damage, and the device is burned out and the electric appliance product fails.

The following takes a food purifier as an example. The food purifier is equipment for carrying out pesticide residue treatment on food materials. In the food purifier using the electrolytic water technology, a purifying bin with purifying electrodes is electrified through a main machine to generate a series of electrochemical reactions, so that pesticide residues and bacteria and viruses are removed, and the original taste of food is restored. The working temperature of the purification bin is different in different use environments, such as areas (Xining, mountain areas and seasides) with high water quality and salinity, and particularly in summer, the working temperature of the purification bin is very high, if the purification bin continuously works at high temperature all the time, the service life of the food purifier can be influenced, even devices are burnt out, and the food purifier breaks down.

Therefore, it is desirable to develop a system that can over-temperature protect a food purifier.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

The application provides an excess temperature protection system for food purification machine for power supply and purification storehouse provide excess temperature protection, power supply is used for control module and purification storehouse power supply, and the purification storehouse has a plurality of purification electrodes, is used for placing in the aquatic of containing food, purifies food under the on-state, and excess temperature protection system includes:

the control module comprises a controller and a control circuit, the controller is electrically connected with the power supply and the control circuit and is used for generating a control signal according to a received external signal and controlling the control circuit to switch on or off the plurality of purifying electrodes, the control circuit is provided with an on-off device, and the on-off device is arranged on the radiating fins;

the temperature sensors are correspondingly arranged at the power supply and the radiating fins and used for collecting the temperatures of the power supply and the radiating fins and feeding back the corresponding temperatures to the controller; and

the temperature controller is arranged on the radiating fin and connected with a live wire of the power supply, and the temperature controller is in a normally-closed state of a mechanical switch;

the controller is configured to be three-level over-temperature protection by acquiring the temperature of the temperature sensor according to different heating conditions.

Optionally, in the over-temperature protection system, the temperature of the power supply is set to a first preset temperature, the temperature of the heat sink is set to a second preset temperature, and the temperature of the temperature controller is set to a third preset temperature, and the temperature controller is configured to be turned off when the temperature reaches the third preset temperature and turned on when the temperature is lower than the third preset temperature,

the control module is configured to be primary over-temperature protection, and when the temperature sensor at the radiating fin detects that the temperature reaches the second preset temperature, the control circuit is controlled to be disconnected, so that the purifying bin stops working, and an alarm is given to prompt a user.

Optionally, when the primary over-temperature protection fails or is abnormal, the control module is further configured to perform secondary over-temperature protection, and when the temperature sensor at the power supply detects that the temperature of the power supply reaches the first preset temperature, the control circuit is controlled to be switched off, so that the purification bin stops working, and an alarm is given to prompt a user.

Optionally, when the primary over-temperature protection and the secondary over-temperature protection are completely disabled or abnormal, and the temperature of the heat sink reaches the third preset temperature, the temperature controller is turned off, so that the food purifier is directly powered off.

Optionally, in the over-temperature protection system, the first preset temperature is 70 ℃, the second preset temperature is 70 ℃, and the third preset temperature is 90 ℃.

Optionally, in the over-temperature protection system, the on-off device is a mos tube, a relay or a triode.

The utility model provides an excess temperature protection system for food purification machine, the temperature of gathering power supply department and fin department through the temperature sensor distribution that corresponds is different according to the condition of generating heat, through the temperature that acquires temperature sensor, configures into tertiary excess temperature protection with the controller, and the device in the abundant protection food purification machine can not influence life because of overheated, and the abundant protection food purification machine does not break down because of the operation of excess temperature.

Further, this application's excess temperature protection system through one-level excess temperature protection, controls the purification storehouse stop work and reminds user food purification machine long time work need pause the heat dissipation. When the primary over-temperature protection fails or is abnormal, the purification bin is controlled to stop working through the secondary over-temperature protection, and the user equipment is informed of overheating and the abnormality of the primary over-temperature protection, so that after-sales personnel are contacted. When the primary and secondary over-temperature protection is invalid or abnormal, the purifying bin is directly powered off. Through the three-level over-temperature protection, the heating condition of the food purifier can be accurately reflected, the overheating condition of the food purifier can be clearly and clearly fed back to a user, and the food purifier can be completely protected.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic block diagram of an over-temperature protection system for a food purifier according to one embodiment of the present application.

The symbols in the drawings represent the following meanings:

100 of a food purifying machine, and a food purifying machine,

10 a power supply for supplying power to the device,

20 a purification bin for storing the liquid to be purified,

30 control module, 31 controller, 32 control circuit,

40 a heat sink for a heat sink, and,

a 50 temperature sensor is arranged on the base plate,

60 temperature controller.

Detailed Description

FIG. 1 is a schematic block diagram of an over-temperature protection system for a food purifier according to one embodiment of the present application. In the present embodiment, an over-temperature protection system for a food purifier 100 is provided to provide over-temperature protection for a power supply 10 and a purification bin 20. The power supply 10 is used for supplying power to the control module 30 and the purification bin 20. The purification chamber 20 has a plurality of purification electrodes for being placed in water containing food to purify the food in an electrified state. The excess temperature protection system includes: a control module 30, a temperature sensor 50, and a thermostat 60. The power supply 10 is used for supplying power to the control module 30 and the purification bin 20. The purification chamber 20 has a plurality of purification electrodes for being placed in water containing food to purify the food in an electrified state. The control module 30 includes a controller 31 and a control circuit 32. The controller 31 is electrically connected to the power supply 10 and the control circuit 32, and is configured to generate a control signal according to the received external signal, and control the control circuit 32 to turn on or off the plurality of purifying electrodes. The control circuit 32 has an on-off switch mounted on the heat sink 40. The temperature sensor 50 is correspondingly disposed at the power supply 10 and the heat sink, and is configured to collect temperatures of the power supply 10 and the heat sink, and feed back the corresponding temperatures to the controller 31. The temperature controller 60 is installed on the heat sink and connected with the live wire of the power supply 10, and the temperature controller 60 is in a mechanical switch normally-closed state. Wherein, according to the heating characteristic of the food purifier 100, the controller 31 is configured to be a three-level over-temperature protection by acquiring the temperature of the temperature sensor 50 according to different heating conditions.

The over-temperature protection system for the food purifier 100 deploys two or more temperature sensors 50 according to the heating condition to detect the temperature, each temperature sensor 50 is mutually matched, three-level over-temperature protection or multi-level protection is realized according to the speed of the temperature rise of the heating part, the service life of devices in the food purifier 100 can not be influenced by overheating, and the food purifier 100 is fully protected from being broken down due to over-temperature operation.

The over-temperature protection system can be applied to other electronic products, temperature sensors are arranged according to different heating parts of the electronic products, the preset temperatures of the power supply and the heating parts are set, and three-level over-temperature protection or multi-level protection is achieved according to the speed of temperature rise of the heating parts.

Further, in this embodiment, in the over-temperature protection system, the temperature of the power supply 10 is set to be a first preset temperature. Setting the temperature of the heat sink 40 to a second preset temperature. Setting the temperature of the temperature controller 60 to a third preset temperature, and the temperature controller 60 is configured to be turned off when the temperature reaches the third preset temperature and to be turned on when the temperature is lower than the third preset temperature.

The control module 30 is configured as a primary over-temperature protection, and when the temperature sensor 50 at the heat sink 40 detects that the temperature at this point reaches the second preset temperature, the control circuit 32 is controlled to be turned off, so that the purification bin 20 stops working, and an alarm is given to prompt a user that the heat dissipation of the food purifier 100 needs to be suspended after long-time working.

Further, in this embodiment, in the over-temperature protection system, when the primary over-temperature protection fails or is abnormal, the control module 30 is further configured to perform secondary over-temperature protection, and when the temperature sensor 50 at the power supply 10 detects that the temperature at this position reaches the first preset temperature, the control circuit 32 is controlled to be turned off, so that the purification bin 20 stops working, and an alarm is provided to prompt a user to notify the user that the user equipment is overheated and the primary over-temperature protection is abnormal, so as to contact after-sales personnel.

Further, in this embodiment, when the primary over-temperature protection and the secondary over-temperature protection are all failed or abnormal, and the temperature of the heat sink 40 reaches the third preset temperature, the temperature controller 60 is turned off, so that the food purifier 100 is directly powered off.

The over-temperature protection system controls the purification bin 20 to stop working and reminds a user that the food purifier 100 needs to pause heat dissipation when working for a long time through one-level over-temperature protection. When the primary over-temperature protection fails or is abnormal, the purification bin 20 is controlled to stop working through the secondary over-temperature protection, and the user equipment is informed of overheating and the primary over-temperature protection is abnormal, so that after-sales personnel are contacted. When both the primary and secondary over-temperature protection fail or are abnormal, the food purifier 100 is directly powered off. Through the three-level over-temperature protection, the heating condition of the food purifier 100 can be accurately reflected, the overheating condition of the food purifier 100 can be clearly and clearly fed back to a user, and the food purifier 100 can be completely protected.

More specifically, in the over-temperature protection system, the on-off device is a mos tube, a relay or a triode. In this embodiment, the on-off device is a mos tube.

In specific implementation, the over-temperature protection system comprises:

the power supply 10: the input was 220V municipal electricity. Two output points are provided, one is a working output and provides large current for the work of the purifying bin 20; the other is the control circuit 32 output to power the control section.

The control part: is divided into two parts. One part is a controller 31, namely an MCU main control part (the main functions are signal acquisition, analysis and output); the other part is a control circuit 32, namely a large current output control part, which is controlled by the MCU and receives signals from the MCU to carry out the next work. The mos tube, which plays a major role in the control circuit 32, generates heat very severely during operation and can be mounted on the heat sink 40 to increase heat dissipation.

Temperature sensor 50: two temperature sensors 50 are total in the over-temperature protection system of the application: one is located on the mos tube fin 40 and detects the temperature rise of the fin 40; one is located on the power supply and detects the temperature rise of the power supply. The information collected by the two temperature sensors 50 is transmitted to the MCU for analysis and judgment.

The working principle is as follows:

after a plurality of temperature rise test tests, the data are analyzed, and the heat radiating fin 40 is the component with the fastest temperature rise in the over-temperature protection system and is the power supply 10. The temperature of the heat sink 40 is 10 ℃ different from the temperature of the power supply 10, and the temperature of the heat sink 40 is 10 ℃ higher than that of the power supply 10 under the same condition.

The working temperature of the MOS tube is not more than 90 ℃, the working temperature of the power supply 10 is not more than 80 ℃, so that a temperature controller 60NTC connected with 220V sets a third preset temperature to be 90 ℃; the power supply 10 itself has a 75 deg.c cut-off protection. Setting the temperature of the power supply 10 to reach a first preset temperature of 70 ℃ and then alarming to prompt a user; in order to improve the safety factor and the service life of the equipment, one-step over-temperature detection protection is added on the radiating fin 40, namely, when the temperature of the radiating fin 40 reaches 70 ℃ which is the second preset temperature, an alarm is given to prompt a user.

The operation process of the over-temperature protection system comprises the following steps: after the purification bin 20 works for a long time, the first-stage over-temperature protection is performed, and if the temperature of the temperature sensor 50 on the cooling fin 40 reaches 70 ℃, the MCU controls the purification bin 20 to stop working and reminds the user equipment of stopping heat dissipation when the user equipment works for a long time. If the first-stage over-temperature protection fails or is abnormal, the second-stage over-temperature protection transmits a signal to the MCU when the temperature of the power supply 10 reaches 70 ℃, namely the temperature of the radiating fin 40 reaches 80 ℃, and the MCU controls the purifying bin 20 to stop running and informs the user of the overheating of the equipment and the abnormality of the first-stage over-temperature protection, so as to contact with after-sales personnel. If the first and second over-temperature protections are all disabled or abnormal, the food purifier 100 may be directly powered off when the heat sink 40 reaches 90 ℃.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides an excess temperature protection system for food purification machine, for providing excess temperature protection for power supply (10) and purification storehouse (20), power supply (10) are used for control module (30) and purification storehouse (20) power supply, and purification storehouse (20) have a plurality of purification electrodes, are used for placing in the aquatic of filling with food, purify food under the on-state, and excess temperature protection system includes:

the control module (30) comprises a controller (31) and a control circuit (32), the controller (31) is electrically connected with the power supply (10) and the control circuit (32) and is used for generating a control signal according to a received external signal and controlling the control circuit (32) to switch on or off the plurality of purifying electrodes, and the control circuit (32) is provided with an on-off device which is installed on the radiating fin (40);

the temperature sensors (50) are correspondingly arranged at the power supply (10) and the radiating fins (40) and are used for acquiring the temperatures of the power supply (10) and the radiating fins (40) and feeding the corresponding temperatures back to the controller (31); and

the temperature controller (60) is arranged on the radiating fin (40) and is connected with a live wire of the power supply (10), and the temperature controller (60) is in a mechanical switch normally-closed state;

the controller (31) is configured to be three-level over-temperature protection by acquiring the temperature of the temperature sensor (50) according to different heating conditions.

2. Over-temperature protection system according to claim 1, wherein the temperature of the power supply source (10) is set to a first preset temperature, the temperature of the heat sink (40) is set to a second preset temperature, the temperature of the thermostat (60) is set to a third preset temperature, and the thermostat (60) is configured to be open when the temperature reaches the third preset temperature and to be closed when the temperature is lower than the third preset temperature,

the control module (30) is configured to be a primary over-temperature protection, and when the temperature sensor (50) at the radiating fin (40) detects that the temperature reaches the second preset temperature, the control circuit (32) is controlled to be disconnected, so that the purifying bin (20) stops working, and an alarm is given to prompt a user.

3. An over-temperature protection system according to claim 2, wherein when the primary over-temperature protection fails or is abnormal, the control module (30) is further configured to perform secondary over-temperature protection, and when the temperature sensor (50) at the power supply (10) detects that the temperature reaches the first preset temperature, the control circuit (32) is controlled to be disconnected, the purification bin (20) is stopped, and a warning is given to a user.

4. The over-temperature protection system according to claim 3, wherein when the primary and secondary over-temperature protection are all failed or abnormal, the temperature controller (60) is turned off when the temperature of the heat sink reaches the third preset temperature, so that the food purifier is directly powered off.

5. An over-temperature protection system according to claim 2, wherein the first predetermined temperature is 70 ℃, the second predetermined temperature is 70 ℃ and the third predetermined temperature is 90 ℃.

6. An over-temperature protection system according to any one of claims 1-5, wherein the on-off switch is a mos tube, a relay or a triode.

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